Incorrect Resistance Measurements Check
- If problem happens with only one key, clean or replace faulty key. If condition is present with all keys, lock cylinder may be dirty/defective or there is a fault in key resistance circuit wiring, connections or contacts.
- Using ohmmeter, check key resistance. Disconnect PASS-Key II(R) decoder module, insert key in ignition and measure resistance across terminals B8 (White/Black wire) and B7 (Purple/White wire) of decoder module harness connector. Wiggle harness while performing test. Resistance should be within 10 ohms of resistance measured on key when it was removed from vehicle.
- If resistance is not within 10 ohms, determine if resistance difference is wiring, wiring connections, dirty key/lock cylinder contacts or defective lock cylinder.
- Rotate key through all positions and check for a change in resistance. A change of more than 10 ohms indicates a problem with lock cylinder or key contacts.
Pass Key Resistance Values
| Key Resistance Number | Ohms Value |
|---|---|
| 1 | 402 |
| 2 | 523 |
| 3 | 681 |
| 4 | 887 |
| 5 | 1130 |
| 6 | 1407 |
| 7 | 1870 |
| 8 | 2370 |
| 9 | 3010 |
| 10 | 3740 |
| 11 | 4750 |
| 12 | 6040 |
| 13 | 7500 |
| 14 | 9530 |
| 15 | 11800 |